How do I refill my ceramic herb mill?

To fill or refill a ceramic herb mill: 1. pull the wooden handle sideways out of the main plastic shaft; 2. remove the two plastic washers, the spring and the lid; 3. carefully fill with herbs while holding the main shaft in place from the bottom;  4. reassemble in the opposite order.
We also have a video showing the steps: https://youtu.be/NrZIP9XEqRI